Beobachtung zur Sommerschwäche - ALH | Posts 48+

Sorry, Peter, but you still don't understand how the EDC works.

The MSG (Message) contains a variety of characteristic fields. These include, among others, the torque limitation field, the driver request field, and the turbidity field.

In the driver request control unit (KF), the relationship between accelerator pedal position and desired fuel injection volume is stored as a function of engine speed.
The torque limiting control unit limits the maximum permissible injection quantity as a function of engine speed.
The air mass flow sensor limits the fuel injection quantity depending on the current air mass flow rate.

The minimum value is transmitted by the EDC as a control signal to the injection pump.
Your box is installed between the pump and the EDC (Electronic Stability Control), which distorts the signals, so that the EDC doesn't receive any of them. Therefore, the torque limitation cannot influence the distorted signal from the box .

A possible performance limit could be the maximum lifting height of the pump. If you're already using that maximum, then that's the end of it.

Regards,
Alex.

@alex

Oops!
'That's so stupid; I never thought I'd get stuck in such a mental rut.'
Basically, I already understand how the engine control unit (ECU) translates signals using characteristic curves.
and thereby determines the required fuel injection amount and air mass.
Unfortunately, I overlooked the fact that the torque limitation setting is practically ineffective.
if the signals are subsequently manipulated or altered.

Thank you, Peter.

Sure, here is the translation of the text from German to English:

'PS:'
Is it more likely that the pump is unable to provide sufficient flow?
or that the fuel injectors are clogged and not working properly.